What is it called when one drug alters the effects of another drug?

When one drug alters the effects of another drug, this phenomenon is referred to as a drug interaction. Drug interactions can occur in various ways, such as one medication enhancing or diminishing the effects of another, leading to unintended side effects or decreased efficacy. Understanding drug interactions is crucial for medication safety, as they can significantly impact patient outcomes. Recognizing and managing these interactions helps healthcare professionals ensure that patients receive the maximum benefit from their medications while minimizing potential risks.

Other terms, while they may seem relevant, do not accurately define this specific interaction. For instance, drug-synergy refers to a situation where combining two drugs results in a greater effect than the sum of their individual effects, while drug-reaction typically refers to adverse effects that can occur as a result of taking a medication.